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  1. #1
    ROG Enthusiast Array
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    NZXT CAM software GPU fan speeds not accurate

    System specs:

    Case: Phanteks Eclipse 400 Tempered Glass Edition CPU Cooler: Deepcool Assassin 2 air cooler Motherboard: Asus ROG Strix Z270F CPU: Intel i-7 7700k GPU: Asus ROG Strix GTX 1080 Storage: Samsung 960 EVO 250GB PCIe NVMe M.2 PSU: EVGA 750 G3 Memory: Corsair Vengeance LPX 16GB (2x8GB) DDR4 DRAM 3000MHz OS: Windows 10 Pro

    Hey guys,

    I noticed that on the NZXT CAM software, it shows my GPU fan speed at 0 RPM, when they are indeed spinning. Right now all 3 fans are spinning for 3-4 seconds, then stops, then spins again (Is this normal btw?). All I'm doing is typing surfing the web. I don't know if this means anything, but the weather here is really hot right now. Anyway is it normal for the CAM software to show the RPM fan speed of my GPU at 0, even when its spinning? Is it because its spinning at such a low RPM that it doesn't register?

  2. #2
    ROG Enthusiast Array AndyBlak PC Specs
    AndyBlak PC Specs
    MotherboardASUS Maximus IX Hero
    ProcessorIntel i7-7700K
    Memory (part number)Corsair LPX 3000MHz 32gb
    Graphics Card #1ASUS ROG STRIX-GTX1070-O8G-GAMING
    Graphics Card #2ASUS ROG STRIX-GTX1070-O8G-GAMING
    MonitorASUS PB277Q, Lenovo LI2364d
    Storage #1Samsung SSD
    Storage #2WD HDD
    CPU CoolerCorsair H100i v2
    CaseCooler Master Haf X
    Power SupplyCorsair RM850i
    Keyboard Corsair Strafe MGX Silent
    Mouse Corsair Scimitar
    Headset Corsair Wireless RGB
    OS Windows 10 Pro
    Network RouterASUS RT-AC5300
    AndyBlak's Avatar
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    While I can't say that I have personal experience with the NZXT software that you are referring to, the most likely cause is that the software is looking for fan sensors in a different place than they actually are. Are you running any software like HWiNFO that shows your sensor IDs?

    One thing that you could do to address the fan spin-up/spin-down is install GPU Tweak 2. You can set custom fan curves which give you better control over when the fans run. GPU Tweak will also give you more control over your clock speeds, etc.

  3. #3
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    Thanks for the reply. So is it normal for the fans to act like what I explained? I need to know because I can still request an exchange

  4. #4
    ROG Enthusiast Array AndyBlak PC Specs
    AndyBlak PC Specs
    MotherboardASUS Maximus IX Hero
    ProcessorIntel i7-7700K
    Memory (part number)Corsair LPX 3000MHz 32gb
    Graphics Card #1ASUS ROG STRIX-GTX1070-O8G-GAMING
    Graphics Card #2ASUS ROG STRIX-GTX1070-O8G-GAMING
    MonitorASUS PB277Q, Lenovo LI2364d
    Storage #1Samsung SSD
    Storage #2WD HDD
    CPU CoolerCorsair H100i v2
    CaseCooler Master Haf X
    Power SupplyCorsair RM850i
    Keyboard Corsair Strafe MGX Silent
    Mouse Corsair Scimitar
    Headset Corsair Wireless RGB
    OS Windows 10 Pro
    Network RouterASUS RT-AC5300
    AndyBlak's Avatar
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    The most likely cause of the issue is the fan curve. Basically, the speed of the fans is determined by the temperature of the GPU. If the fan curve is not quite right for the equipment, you can get those spin-ups/spin-downs. Let's say, for example, the default fan curve sets 50% fan power at 50°C, and 75% at 55°C. That's a rather silly example, but just for the sake of explaining, if the GPU were to hover between 54 and 55 degrees, the fans would constantly spin up and down between 50 and 75% power.

    Setting a custom fan curve, or using fixed percentages for the fan power helps with this issue. Another feature that I like about GPU Tweak is that you can set a linear fan curve. I'm attaching the one that I'm using.

    However, if you think there is a defect or problem with the fans/GPU, the best thing to do is use monitoring software like HWiNFO or SIV to observe the temperatures and fan speeds.
    Miniatura de Adjuntos Miniatura de Adjuntos fan curve.jpg  


  5. #5
    ROG Guru: White Belt Array mcleod52 PC Specs
    mcleod52 PC Specs
    Laptop (Model)n/a
    MotherboardASUS ROG Maximus IX Hero
    ProcessorIntel Core i5-7600K Kaby Lake
    Memory (part number)G.SKILL TridentZ RGB Series 16GB
    Graphics Card #1GIGABYTE GeForce GTX 1060 Windforce
    MonitorLG 27UD69-W
    Storage #1Plextor M8Pe M.2 2280 256GB NVMe
    Storage #2Samsung SSD 850 EVO
    CPU CoolerNZXT Kraken X52
    CasePhantek P400S
    Power SupplyEVGA SuperNOVA 550 G2
    Keyboard Logitech G610 Orion Red
    Mouse ASUS ROG Gladius II
    Headset Bloody M660 MOCI
    Headset/Speakers Lepai LP-188HA + Polk Audio RTiA3's & PSW 303
    OS Windows 10 64 bit

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    I wouldn't put too much stock in the CAM software from NZXT. I use it for my Kraken x52 and let's just saying the software is seriously lacking stability.

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